Experience Of One-Electrode Symplicity Flex Catheter And Multi-Electrode Symplicity Spyral Catheter In Kazakhstan

The purpose of research is to compare the efficacy and safety of applying one-electrode Symplicity Flex catheter and multi-electrode Symplicity Spyral catheter. Materials and methods. Inclusion criteria: age 3070, diagnosed with essential arterial hypertension (AH), arterial pressure (AP) > 60/100 mm Hg. resulted while taking three or more drugs with written informed consent. Exclusion criteria: average daily systolic AP <135 mm Hg., glomerular filtration rate < 45 ml/min/1.73 m2), symptomatic AH. In both groups there was Performed renal artery radiofrequency denervation (RDN) with radiofrequency power 5-8 watt with constantly controlled temperature and impedance. In the I-st group, the duration of each application was 2 minutes, in the II-nd group duration of each application made up 1 min. Results. At he time of this analysis the renal artery radiofrequency denervation was performed with 44 patients in the I-st group and 14 patients in the II-nd group. 6 months later after renal artery RDN 25 patients of the I-st group and 4 of them in the II-nd group were examined once more. In no case there were revealed long-term complications, significant deterioration of renal blood flow and renal function. It was found a marked reduction of office AP 6 months later after the application of renal artery RDN, there was a decrease of systolic AP/diastolic AP indexes at the office measurement for 39/28 mm Hg. (p <0,01) in the I-group and for 58/46 mm Hg. in the II-group, respectively. The average duration of renal artery RDN procedure in the I-group was 63 3 +/- 27,01 min., 01 min while in the II-group -36,4 +/- 15,63 min. Conclusion. Application of multi-electrode catheter in Clinical practice helps to significantly reduce the total duration of intervention and improve efficiency.